Citation: LIU Zhi-Qi, LI Li-Juan, ZHANG Dong-Sheng, JI Lian-Min, CHEN Yun-Fa, WANG Nian-Yi. Spherical Magnesium Hydroxide Prepared by Gas-Liquid Contact Method[J]. Chinese Journal of Inorganic Chemistry, ;2014, 30(3): 705-709. doi: 10.11862/CJIC.2014.100 shu

Spherical Magnesium Hydroxide Prepared by Gas-Liquid Contact Method

1.
1 Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China;

Received Date: 20 August 2013
Available Online: 8 November 2013
Fund Project: 国家科技支撑计划(No.2009BAE83B02) (No.2009BAE83B02)青海省科技厅(No.2010-G-221A) (No.2010-G-221A)西部之光(No.2010-1) (No.2010-1)博士后项目(No.118918)资助。 (No.118918)

A regularly shaped spherical magnesium hydroxide was synthesized through gas-liquid contact method. The structure, morphology, size distribution, and other characteristics of the spherical magnesium hydroxide were characterized by X-ray diffraction, thermogravimetry-derivative thermogravimetry, scanning electron microscopy, and laser particle analysis. Results reveal that the synthesized spherical magnesium hydroxide has good particle dispersion, a particle diameter of D₅₀=7.41 μm and a thermal decomposition temperature above 363.6 ℃. The formation mechanism of the spherical magnesium hydroxide was discussed according to the principle of gas-liquid contact reaction, and the high volatility and easy absorbability characteristics of ammonia.
- magnesium hydroxide;spherical;crystal growth;diffusion
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沈阳化工大学材料科学与工程学院沈阳 110142